One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,7,8)(3,9,4,13)(5,14,15,10)(6,11,16,12)(20,28)(24,29)(26,32)(30,31)(34,39)(35,41)(42,45)(43,48)(2,8)(5,15)(9,13)(11,12)(17,18)(19,23)(20,29)(21,25)(22,27)(24,28)(26,30)(31,32)(33,34,38,39)(35,40,41,36)(37,42,46,45)(43,47,48,44)(1,3,7,4)(2,9,8,13)(5,12,15,11)(6,10,16,14)(17,19)(18,22)(20,26)(21,27)(23,25)(24,30)(28,32)(29,31)(33,35,38,41)(34,40,39,36)(37,43,46,48)(42,47,45,44)(1,4,7,3)(2,9,8,13)(5,11,15,12)(6,10,16,14)(17,19)(18,23)(20,26)(21,27)(22,25)(24,31)(28,32)(29,30)(33,34)(35,40)(36,41)(37,45)(38,39)(42,46)(43,44)(47,48)(1,5)(2,10)(3,12)(4,11)(6,13)(7,15)(8,14)(9,16)(17,20)(18,24)(19,26)(21,28)(22,30)(23,31)(25,29)(27,32)(33,36,38,40)(34,41,39,35)(37,44,46,47)(42,48,45,43)(1,6,7,16)(2,11,8,12)(3,10,4,14)(5,13,15,9)(17,18)(19,22)(20,24)(21,25)(23,27)(26,30)(28,29)(31,32)(33,37,38,46)(34,42,39,45)(35,43,41,48)(36,44,40,47)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.